Do you attract the earth or the earth attract you ?Which one is attracting with a large force ?You or the earth

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

What happens when a rubber rod is rubbed with a piece of fur?

Heterogeneous mixture with larger particles that never settle is